Haven't read all the posts here, but I agree. Especially for PvP purposes. Don't get me wrong, many tankers are devastating PvPers, but look at the other PvP sets, at least in terms of dueling (I'm excluding defenders because I don't quite have enough knowledge about its inherent):
Scrappers: Criticals make or break a duel. Criticals are heavily relied upon to finish off other scrappers and tankers.
Blasters: Defiance also makes or breaks a duel. It's near impossible for certain blaster sets to kill certain tank/scrapper sets without milking Defiance effectively. Not to mention the fact that a Blaster can nearly one-shot a squishy opponent if the Blaster is, for example, held down to almost no HP and then becomes unheld.
Controller: Dueling controllers rely on Containment (which is even more unbalanced, IMO, than the abovementioned inherents) to deal the necessary damage to kill opponents, especially with mez suppression disabling perma-holds.
Whether it's dueling or team battles, tankers' inherents are a non-factor, period. There needs to be some compensation. Perhaps an inherent mag-3 mez protection? Or an inherent mez protection that scales up to 3 in magnitude by the time the tank hits 50?
You will be greatly missed in the world of heroes and villains, Cuppa!